US8607812B2 - High temperature butterfly valves - Google Patents
High temperature butterfly valves Download PDFInfo
- Publication number
- US8607812B2 US8607812B2 US13/506,752 US201213506752A US8607812B2 US 8607812 B2 US8607812 B2 US 8607812B2 US 201213506752 A US201213506752 A US 201213506752A US 8607812 B2 US8607812 B2 US 8607812B2
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- Prior art keywords
- disk
- temperature
- seal
- annular seal
- rim
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- Expired - Fee Related
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
- F16K1/2265—Shaping or arrangements of the sealing the sealing being arranged on the valve seat with a channel- or U-shaped seal covering a central body portion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K49/00—Means in or on valves for heating or cooling
- F16K49/005—Circulation means for a separate heat transfer fluid
- F16K49/007—Circulation means for a separate heat transfer fluid located within the obturating element
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
- Y10T137/4245—Cleaning or steam sterilizing
- Y10T137/4259—With separate material addition
Definitions
- This invention relates generally to butterfly valves and, more specifically, to butterfly valves for use with hot materials.
- the seals used in the butterfly valves are generally elastomers which have a low breakdown temperature. Often times the breakdown temperature of the elastomer seal is below the temperature of the material being transported. An exposure of the elastomer seal to high temperature materials, even if limited, can cause failure of the seal. Consequently, butterfly valve are used for handling materials that are at temperatures below the breakdown temperature of the elastomer seal to in order to avoid seal failure.
- a butterfly valve for handling materials where the temperature of the materials flowing through the butterfly valve can exceed the breakdown temperature of the sealing member with the butterfly valve inhibiting contact of hot transportable materials with the sealing member to isolate the hot transportable materials from the sealing member.
- Cooling conduits maintain at least portions of the valve that contacts the sealing member at a temperature below the breakdown temperature of the sealing member to prevent seal failure.
- FIG. 1 is an exploded view of a high temperature butterfly valve
- FIG. 2 is an exploded view of the disk of the high temperature butterfly valve of FIG. 1 ;
- FIG. 3 is a side view of a collar of the high temperature butterfly valve of FIG. 1 ;
- FIG. 4 is a sectional view of the collar of FIG. 3 ;
- FIG. 5 is an end view of the butterfly valve
- FIG. 6 is a sectional view taken along lines 6 - 6 of FIG. 5 ;
- FIG. 7 is a sectional view taken along lines 7 - 7 of FIG. 5 ;
- FIG. 8 is an enlarged section view of a portion of the disk and the annular seal in a non sealing mode
- FIG. 8A is an enlarged section view of the portion of the disk of FIG. 8 in the sealing mode
- FIG. 9 is an enlarged sectional view of the butterfly valve shaft.
- FIG. 10 is an isolated sectional view of the annular seal of the butterfly valve of FIG. 1 .
- FIG. 1 is an exploded view of a high temperature butterfly valve 10 that can handle materials that may exceed the breakdown temperature of a seal in valve 10 .
- butterfly valves have annular seals, which are made from elastomers, that can expand to seal the valve and contract to allow the valve to open or close.
- Valve 10 includes an inlet collar 12 , a housing 11 , an inflatable annular seal 15 , a rotateable disk 14 and an outlet collar 13 .
- Inlet collar 12 and outlet collar 13 typically connect to a conduit, such as a pneumatic conduit, to direct the flow of materials through the butterfly valve 10 .
- the disk 14 is pivotable about a spindle axis 14 a to enable the disk 14 to be opened and closed.
- disk 14 extends transverse to the conduit, as illustrated in FIG. 1 , it prevents flow of materials through the valve 10 . If disk 14 is pivoted 90 degrees about axis 14 a the disk 14 is an open position with the disk parallel to a central axis of collars 13 and 14 to allow material to flow through the valve 10 .
- the components of the valve 14 are generally made of metals to withstand the forces and the temperatures of the materials that may contact the valve.
- the annular seal 15 which is required to expand to seal the valve and contract to unseal the valve, are typically made from materials such as elastomers that breakdown at a few hundred degrees. An example of an elastomer seal that expands and contract to seal and unseal a butterfly valve is shown in Steele U.S. Pat. No. 4,836,499.
- FIG. 2 is an exploded view of disk 14 of the high temperature butterfly valve 10 of FIG. 1 .
- Disk 14 includes a massive central disk member 20 and a rim 21 that fits on the peripheral face 20 a of central disk member 20 .
- Located on the interior of rim 21 are three rings, an outer rib or ring 24 , a central rib or ring 29 and an outer rib or ring 22 .
- a first annular cooling channel 21 b is located between outer ring 24 and central ring 29 .
- an annular cooling channel 21 a is located between central ring 24 and outer ring 22 .
- FIG. 8 The position of the cooling conduits 21 a and 21 b with respect to central disk member 20 and annular seal 15 is shown in FIG. 8 as the central member 20 and rim 21 coact to form two peripherally cooling conduits which have an annular configuration and with an elongated cross section.
- the rim 21 and central member are secured to each other to maintain the rim 21 in fixed position on central member 20 , for example rim 21 may be secured thereto by welding or the like.
- Central member 20 which can function as a heat sink to absorb heat from materials while the cooling system dissipate heat a constant rate although hollow central members may be used in some systems.
- FIG. 2 shows that disk 14 includes a first hollow shaft 25 with a hub 28 extending outward from one end of central disk member 20 and a second hollow shaft 24 having a hub 27 extending outward from an opposite end of central disk member 20 with the shafts 24 and 25 located diametrically opposite from each other.
- Shafts 24 and 25 provide a dual purpose, first they allow one to rotate disk 14 , about axis 14 a , from the closed position to the open position and vice versa. In addition, both shafts permit the axial flow of a cooling fluid therethrough.
- the hub 28 fits in rim 21 with conduit 25 b in fluid communication with passage 20 d and conduit 25 c in fluid communication with passage 20 c .
- shafts 24 and 25 may be affixed to rim 21 by welding or the like.
- disk member 20 may also be affixed to rim 21 by welding to form a disk 14 of unitary construction.
- FIG. 2 shows the flow passages in shaft 25 allows a cooling fluid to be delivered into the annular cooling conduits 21 b and 21 a in periphery of disk 14 , which are formed by disk surface 20 a and cooling channels 21 a and 21 b .
- a reference to FIG. 9 shows an isolated sectional view of the shaft 25 located in housing 11 with a central passage 25 d that directs a cooling fluid, indicated by arrows through the fluid passage 25 b and 25 c into the annular cooling channel 21 a and the annular cooling channel 21 b .
- the fluid passages are located on both sides of shaft 23 so that cooling fluid can flow in opposite directions into peripheral disk cooling channels 21 a and 21 b .
- FIG. 9 shows the annular seal 15 with shaft 25 extending therethrough and the annular seal 15 proximate the peripheral surface 21 d of rim 21 .
- a feature of the invention is the use of a cooling conduit in the periphery of the disk 14 to maintain the peripheral edge of the disk 14 , i.e. rim 21 , which contacts the annular seal 15 below the breakdown temperature of the annular seal 15 .
- a further feature of the invention is that one or multiple features may be used to limit or inhibit the heat transfer from hot materials, which are controlled by the butterfly valve 10 , to the annular seal 15 wherein the hot materials are at temperatures that could cause breakdown of the annular seal.
- hot materials which are controlled by the butterfly valve 10
- the seal 15 may soften, erode or otherwise fail so that the disk 14 can not be properly sealed to prevent passage of materials therepast.
- disk cooling may be incorporated into a butterfly valve to inhibit seal deterioration when the materials handled by the butterfly valve exceed a breakdown temperature of the annular seal.
- the temperature of the hot materials is near or at the breakdown temperature of the annular seal only one of the features may be used, for example disk cooling, and more specifically cooling of the disk parts such as the rim that come into contact with the annular seal.
- multiple features described herein may be used.
- the rings 22 , 23 and 24 can be made narrow in relation to the width of the disk 20 as illustrated in FIG. 8 thus minimizing the heat sink effect of the massive central disk member 20 by limiting a heat conduction path from the central disk member to the rim 21 , which are a metal, for example stainless steel.
- metals are described for formation of central member 20 and rim 21 other materials may be used, particularly if the hot transportable materials are corrosive to metals.
- FIG. 10 shows an isolated view of the inflatable annular seal 15 taken along lines 10 - 10 of FIG. 1 showing annular lobes 15 a and 15 b that can engage the housing 11 as illustrated in FIG. 8A and a shaft opening 15 h .
- the annular seal 15 contains a curved disk sealing surface 15 c having a radius of curvature R 2 that extends from central axis 15 e .
- the radius of curvature of the sealing member surface 15 c which is measured from the central axis 15 e to the outer surface 15 c , is similar or identical to the radius of curvature R 1 , (see FIG. 7 and FIG. 8 ) of disk 14 .
- the similar or identical radius of curvatures allows the gap D 1 (see FIG.
- FIG. 8 illustrates the close tolerance D 1 between surface 21 a and sealing surface 15 c on annular seal 15 .
- the clearance is sufficiently large so as not to bind or hinder the opening and closing of disk 14 but sufficiently small so as to limit the ingress of hot materials into contact with the annular seal 15 .
- a few thousands of an inch clearance is sufficient when the radius of curvature of the disk and the seal are identical or substantially equal.
- a further feature which may be used to inhibit heat transfer to the annular seal 15 includes having the width W 1 of disk 14 greater than the width W 2 of the annular seal 15 as illustrated in FIG. 8A thus limiting the potential contact of the hot materials 9 with the annular seal 15 .
- the exposure of the annular seal 15 to hot materials is limited since lateral contact with the annular seal is the primary means for hot materials to contact annular seal 15 and hence the opportunity for breakdown of the annular seal 15 is inhibited or prevented.
- a further feature which may to used further inhibit breakdown of seal 15 is sealing member cooling and housing cooling, for example FIG. 8 shows, a first cooling conduit 41 is located on a lateral annular face 15 b of annular seal 15 and a second cooling conduit 40 is located on lateral face 15 c of annular seal 15 .
- Conduit 40 is formed by housing 11 and an annular heat conducting flange 45 .
- conduit 41 is formed by housing 11 and an annular heat conducting flange 46 . While elastomers breakdown at temperature considerably less than the temperatures which metals can withstand they are also poor heat conductors.
- the heat transfer between hot materials in the butterfly valve 10 and the annular seal 15 may be minimized through limiting the contact area of the annular seal 15 to the hot materials as well as through cooling valve components that come into contact with the annular seal 15 . That is, by cooling valve components that come into direct contact with the annular seal 15 to temperatures which are below the breakdown temperature of the annular seal 15 one can further enhance the ability of the butterfly valve 10 to handle hot materials which may exceed the breakdown temperature of the annular seal.
- FIG. 8A shows the annular seal 15 in the sealed condition with chamber 50 pressurized thereby causing a seal surface 15 c on annular seal 15 to contact surface 21 d on rim 21 to form a bubble tight seal therebetween.
- the above features to inhibit temperature breakdown of the annular seal 15 may be combined, for example by having disk 14 wider than the annular seal 15 and simultaneously cooling the disk 20 and the annular seal 15 through the cooling passages located proximate thereto which can assist in maintaining the temperature of the annular seal 15 below the breakdown temperature of the annular seal.
- FIG. 3 , FIG. 4 , and FIG. 7 illustrates still another feature which may be used to minimize contact of the hot transportable materials with the annular seal 15 when the disk 14 is in the open position.
- FIG. 3 shows collar 13 having a face plate 13 a for attachment to a conduit and a face plate 13 b for attachment to the housing 11 of butterfly valve 10 .
- FIG. 4 is a cross section view of collar 13 showing the inlet has a diameter D 4 and the outlet a diameter D 2 with the diameter D 2 greater than the diameter D 4 .
- FIG. 5 shows an end view of butterfly valve with collar 13 opening having a diameter D 4 and a disk 14 located therein.
- hot transportable materials can flow on both sides of disk 14 in a straight flow path since the annular seal 15 is radially offset and therefore impingement with annular seal 15 is inhibited.
- FIG. 7 shows a cross section view of collar 13 and collar 14 attached to housing 11 .
- Collar 13 which has an inlet diameter D 4 , which mates with the diameter of a conduit that delivers hot materials to butterfly valve 10 , has an outlet diameter D 2 which is larger than inlet diameter D 4 .
- the internal diameter of collar 13 expands to a diameter D 2 at the disk 14 and reduces to a diameter D 4 at the second collar 14 to also mate with the conduit that receives the hot materials from the butterfly valve 10 .
- the annular seal 15 has a diameter D 3 which is greater than D 2 .
- the annular seal 15 is radially offset from a straight line flow path through the valve 10 to further inhibit hot transportable materials from contacting the annular seal 15 as materials flows through the butterfly valve 10 . That is, when the disk 14 is in the open condition the hot materials, which generally contain mass and sufficient momentum to inhibit radial outflow toward the elastomer seal 15 thus further inhibit direct contact and heat transfer from the hot materials to the annular seal 15
- annular seal 15 has been described herein other shapes of seals may be used with the shut off the valve to inhibit and prevent breakdown of the seal if the material being handle has a temperature that is above the breakdown temperature of the seal.
- the invention further includes a method of intermittent delivery of hot conduit transportable materials though a valve 14 that includes portions of the valve that have a breakdown temperature that is less than the temperature of the transportable materials comprising the steps of: pivoting a disk 14 to a closed condition; expanding an expandable seal 15 until the expandable seal contacts only a portion of a rim 20 of the disk; directing a cooling fluid through at least one cooling conduit 21 a , 21 b in the rim 20 of the disk 14 to maintain the temperature of the portion of the rim that contacts the expandable seal 15 at a temperature that is below a breakdown temperature of the expandable seal.
- the method can include the step of directing a transportable material through housing 11 with the transportable material having sufficient momentum so as to inhibit or prevent bringing the transportable material from coming into contact with the expandable seal 15 .
- the cooling fluid may be directed into a first shaft 25 and out a second shaft 24 with the first and second shaft located diametrically opposite from each other.
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Abstract
A butterfly valve for handling materials where the temperature of the materials flowing through the butterfly valve can exceed the breakdown temperature of the sealing member with the butterfly valve inhibiting contact of hot transportable materials with the sealing member to isolate the hot transportable materials from the sealing member. Cooling conduits maintain at least portions of the valve that contacts the sealing member at a temperature below the breakdown temperature of the sealing member to prevent seal failure.
Description
This application is a divisional application of Ser. No. 12/150,715 filed Apr. 30, 2008 titled HIGH TEMPERATURE BUTTERFLY VALVES now U.S. Pat. No. 8,256,448.
This invention relates generally to butterfly valves and, more specifically, to butterfly valves for use with hot materials.
None
None
The concept of butterfly valves with a central disk is known in the art. One such butterfly valve is shown in Steele et al. U.S. Pat. No. 4,836,499 and another is shown in Steele U.S. Pat. No. 5,295,659. In both valves a central disk pivots from a transverse or closed position, where the disk extends across a flow passage to block materials from passing through the valve, to an axial or open position, where materials enter one side of the valve and flow laterally alongside the disk face before being discharged from the opposite side of the valve. To seal the valve the disk is positioned in the transverse position and an annular elastomer seal or sealing ring is inflated to engage an edge of the disk to form an annular seal around the periphery of the disk. To pivot the disk to an open condition or flow through condition the elastomer seal is deflated and the disk is pivoted from the closed position to an open position.
One of the difficulties of handling hot material with butterfly valves is that the seals used in the butterfly valves are generally elastomers which have a low breakdown temperature. Often times the breakdown temperature of the elastomer seal is below the temperature of the material being transported. An exposure of the elastomer seal to high temperature materials, even if limited, can cause failure of the seal. Consequently, butterfly valve are used for handling materials that are at temperatures below the breakdown temperature of the elastomer seal to in order to avoid seal failure.
A butterfly valve for handling materials where the temperature of the materials flowing through the butterfly valve can exceed the breakdown temperature of the sealing member with the butterfly valve inhibiting contact of hot transportable materials with the sealing member to isolate the hot transportable materials from the sealing member. Cooling conduits maintain at least portions of the valve that contacts the sealing member at a temperature below the breakdown temperature of the sealing member to prevent seal failure.
A further feature of the invention is that one or multiple features may be used to limit or inhibit the heat transfer from hot materials, which are controlled by the butterfly valve 10, to the annular seal 15 wherein the hot materials are at temperatures that could cause breakdown of the annular seal. By breakdown of the annular seal it is understood that the seal 15 may soften, erode or otherwise fail so that the disk 14 can not be properly sealed to prevent passage of materials therepast.
One of the features of, the invention described herein is that disk cooling may be incorporated into a butterfly valve to inhibit seal deterioration when the materials handled by the butterfly valve exceed a breakdown temperature of the annular seal. In some cases where the temperature of the hot materials is near or at the breakdown temperature of the annular seal only one of the features may be used, for example disk cooling, and more specifically cooling of the disk parts such as the rim that come into contact with the annular seal. In other cases when the temperature of the hot materials greatly exceeds the breakdown temperature of the annular seal multiple features described herein may be used. In still other cases one may want to use all or selected features of the invention to ensure that the annular seal is inhibited from breakdown.
As hot materials that are handled by valve 10 may come into prolonged contact with the central disk member 20 one may want to minimize heat conduction between the massive central disk member 20 and rim 21. To do so one can provide minimal surface to surface contact between rim 20 and central disk member 20. That is, the rings 22, 23 and 24 can be made narrow in relation to the width of the disk 20 as illustrated in FIG. 8 thus minimizing the heat sink effect of the massive central disk member 20 by limiting a heat conduction path from the central disk member to the rim 21, which are a metal, for example stainless steel. Although metals are described for formation of central member 20 and rim 21 other materials may be used, particularly if the hot transportable materials are corrosive to metals.
Thus a further feature that one may use to inhibit temperature breakdown of the annular seal 15 is to incorporate close tolerances, usually a few thousands of an inch for example less than 0.010 inches, between the annular seal sealing surface 15 c and the disk periphery surface 21 d to limit travel of the sealing surface 15 c and thus limit the opportunity for the hot material to contact the annular seal 15 when in the expanded or sealed condition. FIG. 8 illustrates the close tolerance D1 between surface 21 a and sealing surface 15 c on annular seal 15. Typically, the clearance is sufficiently large so as not to bind or hinder the opening and closing of disk 14 but sufficiently small so as to limit the ingress of hot materials into contact with the annular seal 15. Typically, in most cases a few thousands of an inch clearance is sufficient when the radius of curvature of the disk and the seal are identical or substantially equal.
A further feature which may be used to inhibit heat transfer to the annular seal 15 includes having the width W1 of disk 14 greater than the width W2 of the annular seal 15 as illustrated in FIG. 8A thus limiting the potential contact of the hot materials 9 with the annular seal 15. As a consequence the exposure of the annular seal 15 to hot materials is limited since lateral contact with the annular seal is the primary means for hot materials to contact annular seal 15 and hence the opportunity for breakdown of the annular seal 15 is inhibited or prevented.
A further feature which may to used further inhibit breakdown of seal 15 is sealing member cooling and housing cooling, for example FIG. 8 shows, a first cooling conduit 41 is located on a lateral annular face 15 b of annular seal 15 and a second cooling conduit 40 is located on lateral face 15 c of annular seal 15. Conduit 40 is formed by housing 11 and an annular heat conducting flange 45. Similarly, conduit 41 is formed by housing 11 and an annular heat conducting flange 46. While elastomers breakdown at temperature considerably less than the temperatures which metals can withstand they are also poor heat conductors. Never the less by placing cooling conduits on the opposed lateral faces 15 g and 15 h of annular seal 15 and limiting the contact area of the hot materials to the annular seal 15 one can cool the annular seal 15 to further inhibit breakdown of the annular seal 15 as housing 11, which supports the annular seal can also be maintained at a temperature below the breakdown temperature of the annular seal 15.
As can be seen in FIG. 8 and FIG. 8A the heat transfer between hot materials in the butterfly valve 10 and the annular seal 15 may be minimized through limiting the contact area of the annular seal 15 to the hot materials as well as through cooling valve components that come into contact with the annular seal 15. That is, by cooling valve components that come into direct contact with the annular seal 15 to temperatures which are below the breakdown temperature of the annular seal 15 one can further enhance the ability of the butterfly valve 10 to handle hot materials which may exceed the breakdown temperature of the annular seal.
The above features to inhibit temperature breakdown of the annular seal 15 may be combined, for example by having disk 14 wider than the annular seal 15 and simultaneously cooling the disk 20 and the annular seal 15 through the cooling passages located proximate thereto which can assist in maintaining the temperature of the annular seal 15 below the breakdown temperature of the annular seal.
It should be pointed out that while an annular seal 15 has been described herein other shapes of seals may be used with the shut off the valve to inhibit and prevent breakdown of the seal if the material being handle has a temperature that is above the breakdown temperature of the seal.
The invention further includes a method of intermittent delivery of hot conduit transportable materials though a valve 14 that includes portions of the valve that have a breakdown temperature that is less than the temperature of the transportable materials comprising the steps of: pivoting a disk 14 to a closed condition; expanding an expandable seal 15 until the expandable seal contacts only a portion of a rim 20 of the disk; directing a cooling fluid through at least one cooling conduit 21 a, 21 b in the rim 20 of the disk 14 to maintain the temperature of the portion of the rim that contacts the expandable seal 15 at a temperature that is below a breakdown temperature of the expandable seal. One can also including a step of directing a cooling fluid through a housing supporting the expandable seal. One can contract the expandable seal 15 and pivot the disk 14 to an open condition. Once in the open condition the method can include the step of directing a transportable material through housing 11 with the transportable material having sufficient momentum so as to inhibit or prevent bringing the transportable material from coming into contact with the expandable seal 15. The cooling fluid may be directed into a first shaft 25 and out a second shaft 24 with the first and second shaft located diametrically opposite from each other.
Claims (5)
1. The method of intermittent delivery of conduit transportable materials through a valve that includes portions that have a breakdown temperature that is less than the temperature of the transportable materials comprising the steps of:
pivoting a disk to a closed condition;
expanding an expandable seal until the expandable seal contacts only a central portion of a rim of the disk to isolate the seal from the transportable materials;
directing a cooling fluid through a first support shaft rotatably supporting the disk and at least one cooling conduit in the rim of the disk to maintain the temperature of the portion of the rim that contacts the expandable seal at a temperature that is below a breakdown temperature of the expandable seal.
2. The method of claim 1 including the step of directing a further cooling fluid through a first heat conducting flange supporting a first side of the expandable seal and a second heat conducting flange supporting a second side of the expandable seal to maintain the expandable seal at the temperature that is below the breakdown temperature of the expandable seal.
3. The method of claim 2 including the step of contracting the expandable seal and pivoting the disk to an open condition while directing cooling fluid through the at least one cooling conduit in the disk while the disk is spaced from the rim by a set of ribs to maintain the rim of the disk in the temperature that is below the breakdown temperature of the expandable seal when the disk is in an open condition.
4. The method of claim 3 including the step of directing a transportable material through the housing with sufficient momentum so as to inhibit or prevent bringing the transportable material into contact with the expandable seal.
5. The method of claim 1 including the step of directing the cooling fluid into the first support shaft and out a second support shaft with the first support shaft and the second support shaft located diametrically opposite from each other.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US13/506,752 US8607812B2 (en) | 2008-04-30 | 2012-05-15 | High temperature butterfly valves |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US12/150,715 US8256448B2 (en) | 2008-04-30 | 2008-04-30 | High temperature butterfly valves |
US13/506,752 US8607812B2 (en) | 2008-04-30 | 2012-05-15 | High temperature butterfly valves |
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US12/150,715 Division US8256448B2 (en) | 2008-04-30 | 2008-04-30 | High temperature butterfly valves |
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US20120227818A1 US20120227818A1 (en) | 2012-09-13 |
US8607812B2 true US8607812B2 (en) | 2013-12-17 |
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US12/150,715 Expired - Fee Related US8256448B2 (en) | 2008-04-30 | 2008-04-30 | High temperature butterfly valves |
US13/506,752 Expired - Fee Related US8607812B2 (en) | 2008-04-30 | 2012-05-15 | High temperature butterfly valves |
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US12/150,715 Expired - Fee Related US8256448B2 (en) | 2008-04-30 | 2008-04-30 | High temperature butterfly valves |
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US (2) | US8256448B2 (en) |
EP (1) | EP2113691B1 (en) |
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USD886237S1 (en) | 2018-09-04 | 2020-06-02 | Swagelok Company | Thermal trace valve body |
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US9133960B2 (en) * | 2013-01-29 | 2015-09-15 | Mks Instruments, Inc. | Fluid control valves |
US9228661B2 (en) | 2013-04-03 | 2016-01-05 | Dynamic Air Inc | Butterfly valve |
US9650206B2 (en) * | 2015-07-24 | 2017-05-16 | Dynamic Aur Inc. | Conveying systems |
TWI658224B (en) * | 2016-06-24 | 2019-05-01 | 美商亞根科技股份有限公司Dba克利米特 | Valve for inflation/deflation |
US10107417B2 (en) * | 2016-12-14 | 2018-10-23 | Fisher Controls International Llc | Single-piece valve closure members having integral flow paths formed via additive manufacturing |
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US2970803A (en) * | 1957-07-22 | 1961-02-07 | Harza Patents | Valve seal |
US3043557A (en) * | 1960-04-11 | 1962-07-10 | Crawford K Stillwagon | Disc valve having periphery sealing ribs |
US3596876A (en) * | 1969-07-11 | 1971-08-03 | Domer Scaramucci | Disc valve with upstream and downstream seats |
CA1059494A (en) * | 1977-04-20 | 1979-07-31 | Richard Liberman | Floating seat butterfly valve |
US4176820A (en) * | 1977-07-05 | 1979-12-04 | Fmc Corporation | Pressure-sensitive temperature-responsive rotary valve for cryogenic temperatures |
US4800915A (en) * | 1987-08-14 | 1989-01-31 | S. P. Kinney Engineers, Inc. | Butterfly valve |
US4836499A (en) * | 1987-09-14 | 1989-06-06 | Dynamic Air Inc. | Butterfly valves |
JP2787726B2 (en) * | 1990-05-31 | 1998-08-20 | 株式会社エヌビーエス | Butterfly valve |
US5295659A (en) * | 1993-07-26 | 1994-03-22 | Dynamic Air, Inc. | Shaft seal for butterfly valve |
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2008
- 2008-04-30 US US12/150,715 patent/US8256448B2/en not_active Expired - Fee Related
- 2008-11-27 BR BRPI0805007-4A patent/BRPI0805007A2/en not_active IP Right Cessation
- 2008-12-30 EP EP08173074.9A patent/EP2113691B1/en not_active Not-in-force
-
2012
- 2012-05-15 US US13/506,752 patent/US8607812B2/en not_active Expired - Fee Related
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FR1555488A (en) | 1966-05-25 | 1969-01-31 | ||
US3692276A (en) * | 1971-05-27 | 1972-09-19 | Jenkins Bros | Butterfly valve |
DE2366032C3 (en) | 1973-06-01 | 1983-11-17 | Zimmermann & Jansen GmbH, 5160 Düren | Water-cooled high temperature valve |
US3986699A (en) | 1974-07-02 | 1976-10-19 | Posi-Seal International, Inc. | Positive shut-off seal |
US5160118A (en) * | 1991-12-17 | 1992-11-03 | Stary Gary M | Pipeline valve apparatus |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10648749B2 (en) | 2017-03-03 | 2020-05-12 | Swagelok Company | Fluid system components with thermal conditioning passages |
US10976118B2 (en) | 2017-03-03 | 2021-04-13 | Swagelok Company | Fluid system components with thermal conditioning passages |
USD886237S1 (en) | 2018-09-04 | 2020-06-02 | Swagelok Company | Thermal trace valve body |
USD895772S1 (en) | 2018-09-04 | 2020-09-08 | Swagelok Company | Thermal trace valve body |
Also Published As
Publication number | Publication date |
---|---|
US20090272926A1 (en) | 2009-11-05 |
US20120227818A1 (en) | 2012-09-13 |
EP2113691A2 (en) | 2009-11-04 |
US8256448B2 (en) | 2012-09-04 |
EP2113691B1 (en) | 2017-04-19 |
BRPI0805007A2 (en) | 2011-08-30 |
EP2113691A3 (en) | 2012-09-05 |
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